Dr. Nettie Stevens’ study of this creature led to the discovery that chromosomes determine an embryo’s sex.
- Fruit fly
- Beetle
- Pig
- Horse
Dr. Nettie Stevens’ study of this creature led to the discovery that chromosomes determine an embryo’s sex.
Beetle. With degrees from Stanford University and Bryn Mawr College, Stevens remained at Bryn Mawr to conduct her experiments. Another scientist, Edmund Wilson, working independently arrived at the same conclusions around the same time as Stevens.